Machine for extracting threads from woven fabrics.



\ J. W. ESHELMAN. 1 MACHINE FOR. EXTRACTING THREADS FROM WOVEN FABRICS. APPLICATION FILED SEPTM}, 1913.

1997,2161 I Patented May19,1914.

2 SHEETSSHEET 1.

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g1 w 101 fM/W I 'J. W. ESHELMAN. MACHINE FOREXTRAOTING THREADS FROM WOVEN FABRIGS.

APPLICATION TILED SEPTA, 1913.

1,097,216. PatentedMay19,1914.

2 SHEETS-SHEET 2.

Witness es 5 entirely and rapidly removed. My present irnrcn.

JOHN W. ESHELMAN, OF NEW YORK, N. Y.

MACHINE FOR EXTRACTING THREADS FROM WOVEN FABRICS. v

ace-acts.

Application filed fileptember 4, 1913. Serial No. 788,140.

Specification of letters Patent.

atented May 19, 1914.

To all whom it may concern:

Be it known that l, JOHN W. ESHELMAN, a citizen of the United States, and resident of the borough of Brooklyn, in the city and State of New York, have invented a new and useful improvement in Machines for Extracting Threads from Woven Fabrics, of which the following is a specification.

In machines for extracting threads from woven fabrics, it is extremely desirable that the threads to be extracted should be accurately and surely deflected from the plane of the body of the fabric with the least possible disturbance to the body of the fabric and that such deflected threads should be invention is directed to the provision of novel means for accomplishing the above advantages.

My invention comprises certain improve- .ments in the construction, form, arrangement and operation of the several coacting parts of a thread extracting machine whereby only the desired threads are deflected from the body portion of the fabric and said deflected threads are acted upon by a rotary.

thread removing means which is operable to act more than once upon the threads deflected by each action of the thread deflecting means, so that the absolute removal of all of the deflected threads is insured; said rotary thread removing means including a knife so mounted, shaped and arranged with respect to its coacting cutter plate and said cutter plate being so shaped that the cutting edge ofjthe knife will be'automat-ically sharpened by the operation of the machine and will at the same'time permit the machine to be run'at a very high rate of speed withoutinjury to the fabric being operated upon.

A practical embodiment of the invention is represented in the accompanying drawings in which only so much of a machine of the above character is illustrated as-will give a clear understanding .of my invention.

Figure 1 represents the machine in front elevation. Fig. 2 is a view of the same in end elevation, partly in section, with the cover plate for the head also removed. Fig. 3 is a detail vertical section on an enlarged scale of'the parts shown in section in Fig. 2. Fig. 4 is a'detail section taken in the plane of the line A-A of Fig. 3. Fig. 5 is a detail section taken in the plane of the line BB of Fig.3. Fig. 6 is a detail plan View of the cutter head. Fig. 7 is a top plan view of theknife. Fig. 8 is a detail horizontal section taken in the plane of the line C C Fig. 9 is a detail horizontal of Fig. 3. view taken in the plane of the line D-D of Fig. 3.' Fig. 10 is an inverted plan view of the cutter plate.

lower end of the deflected blade, and Fig. 13 is a-detail sectional view of the cutter plate on a greatly enlarged scale, with the path of the cutting edge of the knife indicated ,in connection therewith.

A rotary cutter shaftlO is horizontally disposed beneath the table 1, and the shaft is driven, in the present instance, at twice the rotary speed of the shaft .5, through a belt and pulley connection 11, 12, 13. This cutter shaft 10 is provided with a head 14, having an inclined seat 15 for the knife 16, which knife is secured to the head llby a suitable fastening screw 17 passing through an elongated slot 18 in the said knife. The

head 14 is provided with a lip 19, forming a guide for one of the side edges of the knife. The knife 16 is provided with a diagonal cutting edge 20 beveled on its inner face to present a sharp edge. The relation ship of the inclined seat 15 on the cutter head'to the diagonal edge 20 of the knife is such that the entire cutting edge travels in a circular path concentric with the axis of the shaftlO, for obtaining a shearing cut with respect to the cutter diately described.

The cutter plate is denoted by 21, and it is secured in the. proper position on the table 1 with respect to the rotary cutter, by suitable fastening screws 22. This plate has a transversely elongated hole 23, therethrough in position to receive the lower end of the deflector blade to be hereinafter described.

plate to be imme-' Figs. 11'and 12 are detail front and edge views espectively of the the cutter plate as the edge passes by thesaid hole. A slight ridge 24 is formed in the undersurface of the plate 21, adjacent to the hole 23, which ridge projects into the circular path of the cutting edge 20 of the knife 16, so that the said edge is slightly deflected for a very short portion of its rotary movement at the hole 23, thereby causing the edge to be self-sharpening and maintaining the edge at a high degree of cutting efliciency. The cutaway surfaces 25, 26, to the front and rear of the ridge 2d, are so arranged that the cutting edge 20 has a free movement up to the hole23, and a free movement after it leaves the ridge 24:, this latter free movement serving also to insure the free removal of the deflected threads separated from the fabric by the knife.

The thread deflecting blade is. denoted by 27, and its lower end is flattened transversely of the line of feed of the machine. The blade has a diagonal bottom straight edge 28 for facilitating the entry of the blade between the crosswise threads of the fabric. This diagonal straight edge 28 has a notch 29 near its upper end, Whichnotch serves to invariably engage the same longitudinal thread of the fabric, thus insurin the proper number of longitudinal threads being deflected by the blade. This blade is attached to the vertically reciprocating needle bar 6, and its bottom edge passes through a transverse hole 30, in the presser foot 8, and through the transverse hole 28 in the cutter plate 21.

The movements of the cutter with respect to the deflecting blade are so timed that the deflecting blade forces the required number of longitudinal threads downwardly through the hole 23 and the blade is then withdrawn before the said deflected threads are acted upon by theknife 16 of the rotary cutter in its first revolution. The knife of the rotary cutter is again caused to engage -'said dcflected threads during its second revolution for absolutely insuring the removal of any of the deflected threads which might not be cleanly removed by the knife in its first revolution. After this second revolution, the blade 27 again forces the threads beyond the next succeedin transverse thread or threads downwardly t irough the hole 23, it being understood that-the fabric is moved step by step rearwardly by the feeding mechanism.

It is a so to be understood that the number of threads to be removed is controlled by the width of the blade 27, the knife of the rotary cutter being of such width as to cut any desired number of threads within reasonable limits.

A machine having its working parts conthe cutting edge of the knife because of its coaction with the cutter plate.

By causing the knife to travel at a higher rate of speed than the blade, a better cutting action of the knife is obtained upon the deflected threads every revolution of the knife.

It is evident that various changes might be resorted to in the construction, form and arrangement of the various parts without departing from the spirit and scope of my invention; hence I do not wish to limit myself strictly to the form herein shown and described.

YVhat I claim is: I

1. In a machine of the character described, thread deflecting means, and means rotating continuously in one direction during the operation of the machine, for cut ting off the deflected threads, arranged to act more than once for each action of the thread deflecting means, said deflecting means serving to deflect the threads into the path of said cutting means.

2. In' a machine of the character described, thread deflecting means, and means rotating continuously in one direction during the operation of the machine, for cutting off the deflected threads, arranged to act twice for each action of the thread deflecting means, said deflecting means serving to deflect the threads into the path of said cutting means.

8. In a machine of the character dcscribed, a reciprocating thread deflector and a rotary cutter for cutting ofl? the deflected threads, said cutter being operable to act more than once on the deflected threads for each action of t e thread deflector.

4. In a machine of the character decribed, a reciprocating thread deflector and a rotary cutter for cutting ofl the deflected threads, said cutter being operable to act twice on the deflected threads for each action of the thread deflector.

5. In a machine of the character described, a thread deflecting blade and a rotary cutter for cutting off the deflected threads, said cutter being operable to act through,

more than once on the deflected threads for each action of the blade.

n a machine of the character described, a reciprocating thread deflecting blade and a rotary cutter for cutting off the deflected threads,

to act twice on the deflected threads for each 7 action of the bla e.

In a machine of the character de scribed, a cutter Copies of this patent may be being arranged plate having a .hole thereseated I presence of two obtained for five cents each,

of the character deplate having a hole theremeans for forcing the threads to be removed through said hole, a rotar s aft, a cutter head thereon, and. a kni seated on said heat! at an angle to the axis of the shaft said knife havinga diagonal cuttlng edge arranged to coact With the cutthrough, be removed through said hol s aft, a cutter head thereon on said head at an of the shaft, said knife having a diagonal cutting ed therethrough.

In testimony, that I claim the foregoing as my invention, I have signed in name in witnesses, this third day of September 1913,

' JOHN W. ESHELMAN. Witnesses:

F. GEORGE BARRY, IENRY C. THIEME.

Washington, D. 0. c 

